"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : reindex
Case Name   : 使用reindex在线重建不可用的索引（设置参数使索引不可用）
Create At   : 2021/12/13
Owner       : @zou_jialiang050
Description :
    1.建表
    2.向表中插入数据
    3.建索引
    4.设置索引不可用
    5.使用reindex在线重建索引
    6.查询索引状态
    7.清理环境
Expect      :
    1.建表成功
    2.向表中插入数据成功
    3.建索引成功
    4.设置索引不可用成功
    5.使用reindex在线重建索引成功
    6.索引状态可用
    7.清理环境成功
History     :
"""

import os
import unittest
from yat.test import Node
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class SQL(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f'-----{os.path.basename(__file__)} start-----')
        self.dbuserNode = Node('PrimaryDbUser')
        self.primary_sh = CommonSH('PrimaryDbUser')
        self.table = 't_reindex_concurrency_0005'
        self.index = 'i_reindex_concurrency_0005'
        self.Constant = Constant()

    def test_reindex(self):
        step1 = 'step1:建表 expect:建表成功'
        self.logger.info(step1)
        create_table = self.primary_sh.execut_db_sql(f'''
            drop table if exists {self.table};
            create table {self.table}(id int, first_name text, last_name text);
            ''')
        self.logger.info(create_table)
        self.assertIn(self.Constant.TABLE_DROP_SUCCESS, create_table,
                      "执行失败" + step1)
        self.assertIn(self.Constant.CREATE_TABLE_SUCCESS, create_table,
                      "建表失败" + step1)

        step2 = 'step2:向表中插入数据 expect:向表中插入数据成功'
        self.logger.info(step2)
        insert_data = self.primary_sh.execut_db_sql(
            f'''insert into {self.table} select id, md5(random()::text), \
            md5(random()::text) from (select * from 
            generate_series(1,500000) as id) as x;''')
        self.logger.info(insert_data)
        self.assertIn(self.Constant.INSERT_SUCCESS_MSG, insert_data,
                      "执行失败" + step2)

        step3 = 'step3:建索引 expect:建索引成功'
        self.logger.info(step3)
        create_index = self.primary_sh.execut_db_sql(
            f'''drop index if exists {self.index};
            create index {self.index} on {self.table} using 
            gin(to_tsvector('english', first_name)); ''')
        self.logger.info(create_index)
        self.assertIn(self.Constant.DROP_INDEX_SUCCESS_MSG, create_index,
                      "执行失败" + step3)
        self.assertIn(self.Constant.CREATE_INDEX_SUCCESS_MSG, create_index,
                      "建索引失败" + step3)

        step4 = 'step4:设置索引不可用 expect:设置索引不可用成功'
        self.logger.info(step4)
        disable_index = self.primary_sh.execut_db_sql(
            f'''alter index {self.index} unusable;
            \\d {self.table}''')
        self.logger.info(disable_index)
        self.assertIn(self.Constant.ALTER_INDEX_SUCCESS_MSG, disable_index,
                      "设置索引不可用失败" + step4)
        self.assertIn("gin (to_tsvector(\'english\'::regconfig, first_name)) "
                      "TABLESPACE pg_default UNUSABLE", disable_index,
                      "设置索引不可用失败" + step4)

        step5 = 'step5:使用reindex在线重建gin索引' \
                'expect:使用reindex在线重建gin索引成功'
        self.logger.info(step5)
        reindex = self.primary_sh.execut_db_sql(
            f'''reindex index concurrently {self.index};''')
        self.logger.info(reindex)
        self.assertIn('REINDEX', reindex, "执行失败" + step5)

        step6 = 'step6:查询索引状态 expect:索引可用'
        self.logger.info(step6)
        index_status = self.primary_sh.execut_db_sql(
            f'''\\d {self.table}''')
        self.logger.info(index_status)
        self.assertNotIn("gin (to_tsvector(\'english\'::regconfig, "
                         "first_name)) TABLESPACE pg_default UNUSABLE",
                         index_status, "执行失败" + step6)

    def tearDown(self):
        step7 = 'step7:清理环境 expect:清理环境成功'
        self.logger.info(step7)
        clean_environment = self.primary_sh.execut_db_sql(
            f'''drop table {self.table} cascade;''')
        self.logger.info(clean_environment)
        self.assertIn(self.Constant.DROP_TABLE_SUCCESS, clean_environment,
                      "执行失败" + step7)
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
